Google Docs has made their Spreadsheet uploads less of a set-and-forget-and-hope matter. With the latest "Import" updates, spreadsheets can be added onto, specific sheets can be replaced or appended, and you can set Docs to delimit your incoming data based on tabs, commas, or other common marks. Best of all, you get a live preview of what your spreadsheet looks like if you go ahead with the import. [Google Docs Blog via Google Operating System]